maven module 打包报错问题 1C

maven结构如下:
图片说明
当加入web时打包报提示:
Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.2:war (default-war)

后增加


org.apache.maven.plugins
maven-war-plugin
2.4



src\main\webapp




却又提示
**[INFO] Processing war project
[INFO] Copying webapp webResources [E:\workspace\itm.root\itm.client\src\main\webapp] to [E:\workspace\itm.root\itm.client\target\itm.client]
[INFO] Copying webapp resources [E:\workspace\itm.root\itm.client\src\main\webapp]
java.lang.Error: Cleaner terminated abnormally
at sun.misc.Cleaner$1.run(Cleaner.java:148)
at sun.misc.Cleaner$1.run(Cleaner.java:145)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.Cleaner.clean(Cleaner.java:145)
at sun.nio.ch.FileChannelImpl.unmap(FileChannelImpl.java:849)
at sun.nio.ch.FileChannelImpl.transferFromFileChannel(FileChannelImpl.java:647)
at sun.nio.ch.FileChannelImpl.transferFrom(FileChannelImpl.java:708)
at org.codehaus.plexus.util.FileUtils.doCopyFile(FileUtils.java:1077)
at org.codehaus.plexus.util.FileUtils.copyFile(FileUtils.java:1049)
at org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask.copyFile(AbstractWarPackagingTask.java:334)
at org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask$1.registered(AbstractWarPackagingTask.java:154)
at org.apache.maven.plugin.war.util.WebappStructure.registerFile(WebappStructure.java:207)
at org.apache.maven.plugin.war.packaging.AbstractWarPackagingTask.copyFile(AbstractWarPackagingTask.java:149)
at org.apache.maven.plugin.war.packaging.ArtifactsPackagingTask.performPackaging(ArtifactsPackagingTask.java:110)
at org.apache.maven.plugin.war.packaging.WarProjectPackagingTask.handleArtifacts(WarProjectPackagingTask.java:194)
at org.apache.maven.plugin.war.packaging.WarProjectPackagingTask.performPackaging(WarProjectPackagingTask.java:106)
at org.apache.maven.plugin.war.AbstractWarMojo.buildWebapp(AbstractWarMojo.java:505)
at org.apache.maven.plugin.war.AbstractWarMojo.buildExplodedWebapp(AbstractWarMojo.java:433)
at org.apache.maven.plugin.war.WarMojo.performPackaging(WarMojo.java:213)
at org.apache.maven.plugin.war.WarMojo.execute(WarMojo.java:175)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: java.io.IOException: 试图访问无效的地址。
at sun.nio.ch.FileChannelImpl.unmap0(Native Method)
at sun.nio.ch.FileChannelImpl.access$000(FileChannelImpl.java:50)
at sun.nio.ch.FileChannelImpl$Unmapper.run(FileChannelImpl.java:826)
at sun.misc.Cleaner.clean(Cleaner.java:143)
... 38 more
**

1个回答

试试用eclipse导出war包的方式导出吧

Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
其他相关推荐
maven配置私服打包报错Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile
直接使用阿里云镜像仓库打包没问题,替换为私服镜像仓库后报错: 就是pom.xml中的plugin报错 ``` <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> ``` 网上找了半天说这个指定的jdk版本的问题,查了一下版本没问题都是1.8 报错内容: [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile (default-compile) on project mytest-web: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile failed: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.5 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2: Failed to read artifact descriptor for commons-cli:commons-cli:jar:1.2: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile (default-compile) on project mytest-web: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile failed: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.5 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:309) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:194) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:107) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:993) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:345) at org.apache.maven.cli.MavenCli.main(MavenCli.java:191) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.5:compile failed: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.5 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) ... 20 more Caused by: org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.5 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolveInternal(DefaultPluginDependenciesResolver.java:214) at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:149) at org.apache.maven.plugin.internal.DefaultMavenPluginManager.createPluginRealm(DefaultMavenPluginManager.java:402) at org.apache.maven.plugin.internal.DefaultMavenPluginManager.setupPluginRealm(DefaultMavenPluginManager.java:374) at org.apache.maven.plugin.DefaultBuildPluginManager.getPluginRealm(DefaultBuildPluginManager.java:231) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:102) ... 21 more Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:300) at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:325) at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolveInternal(DefaultPluginDependenciesResolver.java:202) ... 26 more Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for commons-cli:commons-cli:jar:1.2 at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:330) at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:199) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:544) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:528) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:418) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:513) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:467) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:513) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:467) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:263) ... 28 more Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:178) at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:224) at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:1051) at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:829) at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:331) at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:321) ... 43 more Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:453) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:255) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:232) at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:174) ... 48 more Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:240) at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:215) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:594) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:512) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:430) ... 51 more [ERROR] [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
在控制台上maven打包报错。
楼主刚看徐晓斌的《maven实战》,正在控制台上鼓捣maven呢,mvn clean compile,mvn clean test也成功,然后mvn clean package打包也成功,但是由于打出来的Jar包没有指定main方法的位置,我就按照书上的案例,加入maven-shade-plugin插件,在pom.xml加入这话话,一直打包都是错误的。 pom.xml文件配置如下: ``` <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>xx.xx.xxx</groupId> <artifactId>hello-maven</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>1.2.1</version> <configuration> <transformers> <transformer implementation = "org.apache.maven.plugins.shade.resource.MainifestResourceTransformer"> <mainClass>xx.xxx.xxx.hellomaven.App</mainClass> </transformer> </transformers> </configuration> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project> ``` 控制台报错信息如下: ``` [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.731s [INFO] Finished at: Tue Mar 29 11:40:17 CST 2016 [INFO] Final Memory: 10M/24M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:1.2.1 :shade (default) on project hello-maven: Unable to parse configuration of mojo o rg.apache.maven.plugins:maven-shade-plugin:1.2.1:shade: ClassNotFoundException: Class name which was explicitly given in configuration using 'implementation' at tribute: 'org.apache.maven.plugins.shade.resource.MainifestResourceTransformer' cannot be loaded -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit ch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please rea d the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginConfigur ationException ``` ~\m2\repository\org\apache\maven\plugins\maven-compiler-plugin 里面居然是2.3.2版本,我的本地仓库下载下载下来的不是指定的那个1.2.1版本,这是怎么回事?
maven,zookeeper报错
启动maven报错Will not attempt to authenticate using SASL (unknown error)求解,不胜感激
Maven多渠道打包报错,求解!
## 这是异常: D:\makeApk\MavenBuild>D:\makeApk\MavenBuild\build.bat [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building mavenbuild-test 1.0.0 [INFO] ------------------------------------------------------------------------ Exception in thread "pool-1-thread-1" java.lang.NoClassDefFoundError: org/eclips e/aether/spi/connector/Transfer$State at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.r un(WagonRepositoryConnector.java:608) at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(Runn ableErrorForwarder.java:67) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor. java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:615) at java.lang.Thread.run(Thread.java:724) [INFO] ------------------------------------------------------------------------C aused by: java.lang.ClassNotFoundException: org.eclipse.aether.spi.connector.Tra nsfer$State at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass( SelfFirstStrategy.java:50)[INFO] BUILD FAILURE at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadCl ass(ClassRealm.java:271)[INFO] ------------------------------------------------- ----------------------- at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm .java:247) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm .java:239) ... 5 more [INFO] Total time: 2.117 s [INFO] Finished at: 2015-07-23T11:06:57+08:00 [INFO] Final Memory: 14M/213M [INFO] ------------------------------------------------------------------------ --------------------------------------------------- constituent[0]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-api-1.0.2.v20150114. jar constituent[1]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-connector-basic-1.0. 2.v20150114.jar constituent[2]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-impl-1.0.2.v20150114 .jar constituent[3]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-spi-1.0.2.v20150114. jar constituent[4]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-transport-wagon-1.0. 2.v20150114.jar constituent[5]: file:/D:/Soft/apache-maven-3.3.3/lib/aether-util-1.0.2.v20150114 .jar constituent[6]: file:/D:/Soft/apache-maven-3.3.3/lib/aopalliance-1.0.jar constituent[7]: file:/D:/Soft/apache-maven-3.3.3/lib/cdi-api-1.0.jar constituent[8]: file:/D:/Soft/apache-maven-3.3.3/lib/commons-cli-1.2.jar constituent[9]: file:/D:/Soft/apache-maven-3.3.3/lib/commons-io-2.2.jar constituent[10]: file:/D:/Soft/apache-maven-3.3.3/lib/commons-lang-2.6.jar constituent[11]: file:/D:/Soft/apache-maven-3.3.3/lib/guava-18.0.jar constituent[12]: file:/D:/Soft/apache-maven-3.3.3/lib/javax.inject-1.jar constituent[13]: file:/D:/Soft/apache-maven-3.3.3/lib/jsoup-1.7.2.jar constituent[14]: file:/D:/Soft/apache-maven-3.3.3/lib/jsr250-api-1.0.jar constituent[15]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-aether-provider-3.3. 3.jar constituent[16]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-artifact-3.3.3.jar constituent[17]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-builder-support-3.3. 3.jar constituent[18]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-compat-3.3.3.jar constituent[19]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-core-3.3.3.jar constituent[20]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-embedder-3.3.3.jar constituent[21]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-model-3.3.3.jar constituent[22]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-model-builder-3.3.3. jar constituent[23]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-plugin-api-3.3.3.jar constituent[24]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-repository-metadata- 3.3.3.jar constituent[25]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-settings-3.3.3.jar constituent[26]: file:/D:/Soft/apache-maven-3.3.3/lib/maven-settings-builder-3.3 .3.jar constituent[27]: file:/D:/Soft/apache-maven-3.3.3/lib/org.eclipse.sisu.inject-0. 3.0.jar constituent[28]: file:/D:/Soft/apache-maven-3.3.3/lib/org.eclipse.sisu.plexus-0. 3.0.jar constituent[29]: file:/D:/Soft/apache-maven-3.3.3/lib/plexus-cipher-1.7.jar constituent[30]: file:/D:/Soft/apache-maven-3.3.3/lib/plexus-component-annotatio ns-1.5.5.jar constituent[31]: file:/D:/Soft/apache-maven-3.3.3/lib/plexus-interpolation-1.21. jar constituent[32]: file:/D:/Soft/apache-maven-3.3.3/lib/plexus-sec-dispatcher-1.3. jar constituent[33]: file:/D:/Soft/apache-maven-3.3.3/lib/plexus-utils-3.0.20.jar constituent[34]: file:/D:/Soft/apache-maven-3.3.3/lib/sisu-guice-3.2.5-no_aop.ja r constituent[35]: file:/D:/Soft/apache-maven-3.3.3/lib/slf4j-api-1.7.5.jar constituent[36]: file:/D:/Soft/apache-maven-3.3.3/lib/slf4j-simple-1.7.5.jar constituent[37]: file:/D:/Soft/apache-maven-3.3.3/lib/wagon-file-2.9.jar constituent[38]: file:/D:/Soft/apache-maven-3.3.3/lib/wagon-http-2.9-shaded.jar constituent[39]: file:/D:/Soft/apache-maven-3.3.3/lib/wagon-http-shared-2.9.jar constituent[40]: file:/D:/Soft/apache-maven-3.3.3/lib/wagon-provider-api-2.9.jar constituent[41]: file:/D:/Soft/apache-maven-3.3.3/conf/logging/ --------------------------------------------------- Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/aether/sp i/connector/Transfer$State at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.r un(WagonRepositoryConnector.java:608) at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(Runn ableErrorForwarder.java:67) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor. java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor .java:615) at java.lang.Thread.run(Thread.java:724) Caused by: java.lang.ClassNotFoundException: org.eclipse.aether.spi.connector.Tr ansfer$State at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass( SelfFirstStrategy.java:50) at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadCl ass(ClassRealm.java:271) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm .java:247) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm .java:239) ... 5 more 系统找不到指定的路径。 子目录或文件 assets 已经存在。 'assets/common.properties'... 正在添加: META-INF/MANIFEST.MF 正在添加: META-INF/DREAMZON.SF 正在添加: META-INF/DREAMZON.RSA 正在签名: assets/common.properties 子目录或文件 assets 已经存在。 'assets/common.properties'... 正在添加: META-INF/MANIFEST.MF 正在添加: META-INF/DREAMZON.SF 正在添加: META-INF/DREAMZON.RSA 正在签名: assets/common.properties 子目录或文件 assets 已经存在。 'assets/common.properties'... 正在添加: META-INF/MANIFEST.MF 正在添加: META-INF/DREAMZON.SF 正在添加: META-INF/DREAMZON.RSA 正在签名: assets/common.properties D:\makeApk> ## 这是pom.xml: <?xml version="1.0" encoding="utf-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.example.mavenbuild</groupId> <artifactId>mavenbuild-test</artifactId> <version>1.0.0</version> <packaging>apk</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>com.google.android</groupId> <artifactId>android</artifactId> <version>4.1.1.4</version> <scope>provided</scope> </dependency> </dependencies> <build> <sourceDirectory>src</sourceDirectory> <finalName>${project.artifactId}</finalName> <pluginManagement> <plugins> <plugin> <groupId>com.jayway.maven.plugins.android.generation2</groupId> <artifactId>android-maven-plugin</artifactId> <version>3.8.2</version> <extensions>true</extensions> </plugin> </plugins> </pluginManagement> <plugins> <plugin> <groupId>com.jayway.maven.plugins.android.generation2</groupId> <artifactId>android-maven-plugin</artifactId> <configuration> <sdk> <!-- platform as api level (api level 16 = platform 4.1)--> <platform>16</platform> </sdk> <sign> <debug>false</debug> </sign> </configuration> </plugin> </plugins> </build> </project>
Maven创建项目报错,archetype:create创建报错
使用mvn archetype:create创建maven的web项目报错。 ``` mvn archetype:create -DgroupId=com.mycompany.app -DartifactId=myWebApp -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false ``` 各位大神们看看什么问题呀! 然而使用mvn archetype:generate创建maven的web项目就可以顺利创建。但是所费时间较长大概40秒左右吧 错误: ![图片说明](https://img-ask.csdn.net/upload/201602/03/1454489967_604743.png)
关于maven下载jar报错问题,本地仓库有相关jar包
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6 Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6 (已经删除响应jar包并且重新maven update 但是依然会弹出报错窗口)
maven打包报错,用命令打包的mvn package 接着报这个错,急等
![图片说明](https://img-ask.csdn.net/upload/201802/02/1517553010_852643.png) ![图片说明](https://img-ask.csdn.net/upload/201802/02/1517553902_211162.png) jdk用的1.8 pom.xml配置maven之后 ``` <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.3</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> ``` 又报错 ![图片说明](https://img-ask.csdn.net/upload/201802/02/1517557255_958482.png) 通过 ``` <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.3</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> <compilerArguments> <verbose /> <bootclasspath>${java.home}\lib\rt.jar;${java.home}\lib\jce.jar</bootclasspath> </compilerArguments> </configuration> </plugin> </plugins> </build> ``` 解决 现在发布又出现了新问题 ![图片说明](https://img-ask.csdn.net/upload/201802/02/1517560036_768869.png)
springboot +shiro+maven 打包运行项目报错
运行登录的时候报下边错误,大神能给看看嘛? ===2019-12-10 13:31:07.250 WARN org.apache.shiro.authc.AbstractAuthenticator Line:216 - Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - root, rememberMe=false (0:0:0:0:0:0:0:1)]. Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException). java.lang.ClassCastException: class org.apache.shiro.authc.UsernamePasswordToken cannot be cast to class com.qiyuansoft.unicorn.common.realm.QYToken (org.apache.shiro.authc.UsernamePasswordToken and com.qiyuansoft.unicorn.common.realm.QYToken are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @651745d7) at com.qiyuansoft.unicorn.common.realm.QYLoginRealm.doGetAuthenticationInfo(QYLoginRealm.java:149) at org.apache.shiro.realm.AuthenticatingRealm.getAuthenticationInfo(AuthenticatingRealm.java:571) at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doSingleRealmAuthentication(ModularRealmAuthenticator.java:180) at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:267) at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:198) at org.apache.shiro.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:106) at org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:274) at org.apache.shiro.subject.support.DelegatingSubject.login(DelegatingSubject.java:260) at org.apache.shiro.web.filter.authc.AuthenticatingFilter.executeLogin(AuthenticatingFilter.java:53) at org.apache.shiro.web.filter.authc.FormAuthenticationFilter.onAccessDenied(FormAuthenticationFilter.java:154) at org.apache.shiro.web.filter.AccessControlFilter.onAccessDenied(AccessControlFilter.java:133) at org.apache.shiro.web.filter.AccessControlFilter.onPreHandle(AccessControlFilter.java:162) at org.apache.shiro.web.filter.PathMatchingFilter.isFilterChainContinued(PathMatchingFilter.java:203) at org.apache.shiro.web.filter.PathMatchingFilter.preHandle(PathMatchingFilter.java:178) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:131) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:130) at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:66) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:105) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834) ===2019-12-10 13:31:07.253 DEBUG org.apache.shiro.web.servlet.SimpleCookie Line:226 - Added HttpServletResponse Cookie [QYrememberMe=deleteMe; Path=/; Max-Age=0; Expires=Mon, 09-Dec-2019 05:31:07 GMT] ===2019-12-10 13:31:07.254 DEBUG org.apache.shiro.web.filter.authc.FormAuthenticationFilter Line:206 - Authentication exception org.apache.shiro.authc.AuthenticationException: Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - root, rememberMe=false (0:0:0:0:0:0:0:1)]. Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException). at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:214) at org.apache.shiro.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:106) at org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:274) at org.apache.shiro.subject.support.DelegatingSubject.login(DelegatingSubject.java:260) at org.apache.shiro.web.filter.authc.AuthenticatingFilter.executeLogin(AuthenticatingFilter.java:53) at org.apache.shiro.web.filter.authc.FormAuthenticationFilter.onAccessDenied(FormAuthenticationFilter.java:154) at org.apache.shiro.web.filter.AccessControlFilter.onAccessDenied(AccessControlFilter.java:133) at org.apache.shiro.web.filter.AccessControlFilter.onPreHandle(AccessControlFilter.java:162) at org.apache.shiro.web.filter.PathMatchingFilter.isFilterChainContinued(PathMatchingFilter.java:203) at org.apache.shiro.web.filter.PathMatchingFilter.preHandle(PathMatchingFilter.java:178) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:131) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:130) at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:66) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:105) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:123) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.ClassCastException: class org.apache.shiro.authc.UsernamePasswordToken cannot be cast to class com.qiyuansoft.unicorn.common.realm.QYToken (org.apache.shiro.authc.UsernamePasswordToken and com.qiyuansoft.unicorn.common.realm.QYToken are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @651745d7) at com.qiyuansoft.unicorn.common.realm.QYLoginRealm.doGetAuthenticationInfo(QYLoginRealm.java:149) at org.apache.shiro.realm.AuthenticatingRealm.getAuthenticationInfo(AuthenticatingRealm.java:571) at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doSingleRealmAuthentication(ModularRealmAuthenticator.java:180) at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:267) at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:198) ... 67 common frames omitted ===2019-12-10 13:31:07.281 DEBUG org.apache.shiro.session.mgt.DefaultSessionManager Line:218 - Unable to resolve session ID from SessionKey [org.apache.shiro.web.session.mgt.WebSessionKey@47af0345]. Returning null to indicate a session could not be found.
idea中配置maven的问题
我的maven仓库在D盘、里面很多包、然后我倒入一个项目后、pom里都有配置这些包的、maven配置也没问题、pom里也不报错、但是libraries里没有这些包 maven module里报错、不知道什么原因!另一个也用这个maven库的项目就可以、配置都是一样的
maven打包时报错,dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique
maven项目打包时报错,如下图,困扰了我两天了,心力交瘁,还望走过路过的前辈给与指点,谢谢!!maven3.2.5,jdk1.6 ![图片说明](https://img-ask.csdn.net/upload/201910/21/1571624802_850311.jpg) ![图片说明](https://img-ask.csdn.net/upload/201910/21/1571624858_650725.jpg)
maven打包报错Unsupported major.minor version 51.0
我把eclipse换成jdk1.6,系统环境换成jdk1.6但是maven打包时 还是报下面的错误,求大神指导 Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/maven/cli/MavenCli : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401) at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42) at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239) at org.codehaus.plexus.classworlds.launcher.Launcher.getMainClass(Launcher.java:144) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:266) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
IDEA使用Maven打包Spark项目报错
报错日志如下: F:\IdeaProjects\testspark>mvn clean package [ERROR] Error executing Maven. [ERROR] 1 problem was encountered while building the effective settings [FATAL] Non-parseable settings F:\Program Files\apache-maven-3.5.0\bin\..\conf\settings.xml: expected START_TAG or END_TAG not TEXT (position: TEXT seen ...</url>\ua0\ua0\t\t\ua0\ua0\ua0\ua0\ua0\ua0 \ua0\ua0\n\t</mirror>\ua0\n </... @164:5) @ F:\Program Files\apache-maven-3.5.0\bin\..\conf\settings.xml, line 164, column 5 日志说setting.xml文件第165行的标签有问题,但是我检查后没发现有哪里不对啊,如下图: ![图片说明](https://img-ask.csdn.net/upload/201708/13/1502635652_248904.png) 有没有知道如何解决的呢?
maven update project 报错
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5 Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.5![图片说明](https://img-ask.csdn.net/upload/201504/03/1428046444_669591.png)
eclipse创建maven工程时报错
使用的是官方的Eclipse中自带的m2e插件,创建maven项目时就弹出个错误 ![图片说明](https://img-ask.csdn.net/upload/201507/15/1436949464_186734.png) 在pom.xml文件那会显示个红X,提示如下: Multiple annotations found at this line: - Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (execution: default-testCompile, phase: test- compile) - Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.6:resources failed: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.maven:maven-plugin-api:jar:2.0.6, org.apache.maven:maven- project:jar:2.0.6, org.apache.maven:maven-profile:jar:2.0.6, org.apache.maven:maven-artifact-manager:jar:2.0.6, org.apache.maven:maven-plugin-registry:jar:2.0.6, org.apache.maven:maven-core:jar:2.0.6, org.apache.maven:maven-plugin-parameter-documenter:jar:2.0.6, org.apache.maven:maven-repository-metadata:jar:2.0.6, org.apache.maven:maven-error-diagnostics:jar:2.0.6, org.apache.maven:maven-plugin-descriptor:jar:2.0.6, org.apache.maven:maven-artifact:jar:2.0.6, org.apache.maven:maven- settings:jar:2.0.6, org.apache.maven:maven-model:jar:2.0.6, org.apache.maven:maven-monitor:jar:2.0.6, org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9-stable-1: Failure to transfer org.apache.maven:maven-plugin-api:jar:2.0.6 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.maven:maven-plugin-api:jar:2.0.6 from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled. (org.apache.maven.plugins:maven-resources-plugin:2.6:resources:default-resources:process-resources) org.apache.maven.plugin.PluginExecutionException: Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.6:resources failed: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.maven:maven- plugin-api:jar:2.0.6, org.apache.maven:maven-project:jar:2.0.6, org.apache.maven:maven-profile:jar:2.0.6, org.apache.maven:maven-artifact-manager:jar:2.0.6, org.apache.maven:maven-plugin-registry:jar:2.0.6, org.apache.maven:maven-core:jar:2.0.6, org.apache.maven:maven-plugin-parameter-documenter:jar:2.0.6, org.apache.maven:maven-repository-metadata:jar:2.0.6, org.apache.maven:maven-error-diagnostics:jar:2.0.6, org.apache.maven:maven-plugin-descriptor:jar:2.0.6, org.apache.maven:maven-artifact:jar:2.0.6, org.apache.maven:maven-settings:jar:2.0.6, org.apache.maven:maven-model:jar:2.0.6, org.apache.maven:maven-monitor:jar:2.0.6, org.codehaus.plexus:plexus-container-default:jar:1.0-alpha-9-stable-1: Failure to transfer org.apache.maven:maven-plugin-api:jar:2.0.6 from https://repo.maven.apache.org/ maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.maven:maven-plugin-api:jar:2.0.6 from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106) at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:331) at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1362) at org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112) at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1360) at org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:52) at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:137) at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:172) at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1) at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1$1.call(MavenBuilder.java: 115) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112) at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod $1.call(MavenBuilder.java:105) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151) at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99) at org.eclipse.m2e.core.internal.builder.MavenBuilder $BuildMethod.execute(MavenBuilder.java:86) at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:200) at org.eclipse.core.internal.events.BuildManager $2.run(BuildManager.java:734) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:205) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:245) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:300) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:303) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:359) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:382) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-resources- plugin:2.6 or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.maven:maven-plugin-api:jar:2.0.6, org.apache.maven:maven- project:jar:2.0.6, org.apache.maven:maven-profile:jar:2.0.6, 请问如何解决?谢谢 ----- 本机安装的maven是3.2.2 eclipse是4.5 m2e是1.2 ----- 最后也不知道什么原因,重新下了eclipse就没有问题了
导入maven项目报错pom.xlm
1、导入spring boot maven 项目时子模块pom.xml报错 2、![图片说明](https://img-ask.csdn.net/upload/201910/10/1570699619_216667.png) 3、现在jdk1.8.0 maven 3.5.2 4、spring boot主项目不报错,子项目报错![图片说明](https://img-ask.csdn.net/upload/201910/11/1570755539_914360.png)
maven项目打包遇到错误
![图片说明](https://img-ask.csdn.net/upload/201912/16/1576489744_998852.jpg) 我的springboot项目在打成war包时会有一个js文件报错,错误包括:invalid property id、missing name after . +具体语句、syntax error、invalid return等,有没有大神遇到过或者有思路的,看了一下午,百度了很多也没有解决。
maven 编译报错的问题
错误如下: [root@node1-246 emm-trunk01]# mvn clean install [INFO] Scanning for projects... [ERROR] The build could not read 8 projects -> [Help 1] [ERROR] [ERROR] The project com.polysaas.emm:emm-device:0.0.1-SNAPSHOT (/opt/emm-trunk01/emm-device/pom.xml) has 5 errors [ERROR] Non-parseable POM /root/.m2/repository/org/springframework/boot/spring-boot-starter-parent/1.0.1.RELEASE/spring-boot-starter-parent-1.0.1.RELEASE.pom: start tag unexpected character ; (position: TEXT seen ...,window.analytics}};for(var i=0;i<window.analytics.methods.length;... @32:406) @ /root/.m2/repository/org/springframework/boot/spring-boot-starter-parent/1.0.1.RELEASE/spring-boot-starter-parent-1.0.1.RELEASE.pom, line 32, column 406 -> [Help 2] [ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-web:jar is missing. @ com.polysaas.emm:emm-device:[unknown-version], /opt/emm-trunk01/emm-device/pom.xml, line 50, column 15 [ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-jetty:jar is missing. @ com.polysaas.emm:emm-device:[unknown-version], /opt/emm-trunk01/emm-device/pom.xml, line 60, column 15 [ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-actuator:jar is missing. @ com.polysaas.emm:emm-device:[unknown-version], /opt/emm-trunk01/emm-device/pom.xml, line 64, column 15 [ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-test:jar is missing. @ com.polysaas.emm:emm-device:[unknown-version], /opt/emm-trunk01/emm-device/pom.xml, line 68, column 15 [ERROR] [ERROR] The project com.polysaas.emm:emm-pms:0.0.1-SNAPSHOT (/opt/emm-trunk01/emm-pms/pom.xml) has 5 errors [ERROR] Non-parseable POM /root/.m2/repository/org/springframework/boot/spring-boot-starter-parent/1.1.7.RELEASE/spring-boot-starter-parent-1.1.7.RELEASE.pom: start tag unexpected character ; (position: TEXT seen ...,window.analytics}};for(var i=0;i<window.analytics.methods.length;... @32:406) @ /root/.m2/repository/org/springframework/boot/spring-boot-starter-parent/1.1.7.RELEASE/spring-boot-starter-parent-1.1.7.RELEASE.pom, line 32, column 406 -> [Help 2] 代码是从svn上down下来的,在其他机器上编译没问题,新装的机器上 编译出错了,maven 用3.0.4 和 3.0.5 都是这个问题(maven是解压指定目录的),linux下maven的设置如下: MAVEN_HOME=/opt/maven PATH=$MAVEN_HOME/bin:$PATH export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL EMM_LOG_BASE EMM_LOG_BASE MAVEN_HOME 谢谢!
maven引入springcloud报错,求解决方案
maven项目引入springcloud相关jar报错 <parent>标签标错 For artifact {org.springframework.cloud:spring-cloud-starter-consul-discovery:null:jar}: The version cannot be empty. (org.apache.maven.plugins:maven-resources-plugin:3.0.1:testResources:default-testResources:process-test-resources) <dependency>标签报错 Project build error: Non-resolvable import POM: Failure to find org.springframework.cloud:spring-cloud-dependencies:pom:Finchley.M7 in http://maven.aliyun.com/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of window-aliyun has elapsed or updates are forced
eclipse导入maven项目报错
eclipse导入maven项目报错 ![图片说明](https://img-ask.csdn.net/upload/201907/20/1563627514_583711.png)
相见恨晚的超实用网站
相见恨晚的超实用网站 持续更新中。。。
爬虫福利二 之 妹子图网MM批量下载
爬虫福利一:27报网MM批量下载 点击 看了本文,相信大家对爬虫一定会产生强烈的兴趣,激励自己去学习爬虫,在这里提前祝:大家学有所成! 目标网站:妹子图网 环境:Python3.x 相关第三方模块:requests、beautifulsoup4 Re:各位在测试时只需要将代码里的变量path 指定为你当前系统要保存的路径,使用 python xxx.py 或IDE运行即可。 ...
字节跳动视频编解码面经
三四月份投了字节跳动的实习(图形图像岗位),然后hr打电话过来问了一下会不会opengl,c++,shador,当时只会一点c++,其他两个都不会,也就直接被拒了。 七月初内推了字节跳动的提前批,因为内推没有具体的岗位,hr又打电话问要不要考虑一下图形图像岗,我说实习投过这个岗位不合适,不会opengl和shador,然后hr就说秋招更看重基础。我当时想着能进去就不错了,管他哪个岗呢,就同意了面试...
开源一个功能完整的SpringBoot项目框架
福利来了,给大家带来一个福利。 最近想了解一下有关Spring Boot的开源项目,看了很多开源的框架,大多是一些demo或者是一个未成形的项目,基本功能都不完整,尤其是用户权限和菜单方面几乎没有完整的。 想到我之前做的框架,里面通用模块有:用户模块,权限模块,菜单模块,功能模块也齐全了,每一个功能都是完整的。 打算把这个框架分享出来,供大家使用和学习。 为什么用框架? 框架可以学习整体...
源码阅读(19):Java中主要的Map结构——HashMap容器(下1)
HashMap容器从字面的理解就是,基于Hash算法构造的Map容器。从数据结构的知识体系来说,HashMap容器是散列表在Java中的具体表达(并非线性表结构)。具体来说就是,利用K-V键值对中键对象的某个属性(默认使用该对象的“内存起始位置”这一属性)作为计算依据进行哈希计算(调用hashCode方法),然后再以计算后的返回值为依据,将当前K-V键值对在符合HashMap容器构造原则的基础上,放置到HashMap容器的某个位置上,且这个位置和之前添加的K-V键值对的存储位置完全独立,不一定构成连续的存储
c++制作的植物大战僵尸,开源,一代二代结合游戏
此游戏全部由本人自己制作完成。游戏大部分的素材来源于原版游戏素材,少部分搜集于网络,以及自己制作。 此游戏为同人游戏而且仅供学习交流使用,任何人未经授权,不得对本游戏进行更改、盗用等,否则后果自负。目前有六种僵尸和六种植物,植物和僵尸的动画都是本人做的。qq:2117610943 开源代码下载 提取码:3vzm 点击下载--&gt; 11月28日 新增四种植物 统一植物画风,全部修...
Java学习的正确打开方式
在博主认为,对于入门级学习java的最佳学习方法莫过于视频+博客+书籍+总结,前三者博主将淋漓尽致地挥毫于这篇博客文章中,至于总结在于个人,实际上越到后面你会发现学习的最好方式就是阅读参考官方文档其次就是国内的书籍,博客次之,这又是一个层次了,这里暂时不提后面再谈。博主将为各位入门java保驾护航,各位只管冲鸭!!!上天是公平的,只要不辜负时间,时间自然不会辜负你。 何谓学习?博主所理解的学习,它是一个过程,是一个不断累积、不断沉淀、不断总结、善于传达自己的个人见解以及乐于分享的过程。
程序员必须掌握的核心算法有哪些?
由于我之前一直强调数据结构以及算法学习的重要性,所以就有一些读者经常问我,数据结构与算法应该要学习到哪个程度呢?,说实话,这个问题我不知道要怎么回答你,主要取决于你想学习到哪些程度,不过针对这个问题,我稍微总结一下我学过的算法知识点,以及我觉得值得学习的算法。这些算法与数据结构的学习大多数是零散的,并没有一本把他们全部覆盖的书籍。下面是我觉得值得学习的一些算法以及数据结构,当然,我也会整理一些看过...
Python——画一棵漂亮的樱花树(不同种樱花+玫瑰+圣诞树喔)
最近翻到一篇知乎,上面有不少用Python(大多是turtle库)绘制的树图,感觉很漂亮,我整理了一下,挑了一些我觉得不错的代码分享给大家(这些我都测试过,确实可以生成) one 樱花树 动态生成樱花 效果图(这个是动态的): 实现代码 import turtle as T import random import time # 画樱花的躯干(60,t) def Tree(branch, ...
linux系列之常用运维命令整理笔录
本博客记录工作中需要的linux运维命令,大学时候开始接触linux,会一些基本操作,可是都没有整理起来,加上是做开发,不做运维,有些命令忘记了,所以现在整理成博客,当然vi,文件操作等就不介绍了,慢慢积累一些其它拓展的命令,博客不定时更新 free -m 其中:m表示兆,也可以用g,注意都要小写 Men:表示物理内存统计 total:表示物理内存总数(total=used+free) use...
Python 基础(一):入门必备知识
Python 入门必备知识,你都掌握了吗?
深度学习图像算法在内容安全领域的应用
互联网给人们生活带来便利的同时也隐含了大量不良信息,防范互联网平台有害内容传播引起了多方面的高度关注。本次演讲从技术层面分享网易易盾在内容安全领域的算法实践经验,包括深度...
程序员接私活怎样防止做完了不给钱?
首先跟大家说明一点,我们做 IT 类的外包开发,是非标品开发,所以很有可能在开发过程中会有这样那样的需求修改,而这种需求修改很容易造成扯皮,进而影响到费用支付,甚至出现做完了项目收不到钱的情况。 那么,怎么保证自己的薪酬安全呢? 我们在开工前,一定要做好一些证据方面的准备(也就是“讨薪”的理论依据),这其中最重要的就是需求文档和验收标准。一定要让需求方提供这两个文档资料作为开发的基础。之后开发...
网页实现一个简单的音乐播放器(大佬别看。(⊙﹏⊙))
今天闲着无事,就想写点东西。然后听了下歌,就打算写个播放器。 于是乎用h5 audio的加上js简单的播放器完工了。 演示地点演示 html代码如下` music 这个年纪 七月的风 音乐 ` 然后就是css`*{ margin: 0; padding: 0; text-decoration: none; list-...
Python十大装B语法
Python 是一种代表简单思想的语言,其语法相对简单,很容易上手。不过,如果就此小视 Python 语法的精妙和深邃,那就大错特错了。本文精心筛选了最能展现 Python 语法之精妙的十个知识点,并附上详细的实例代码。如能在实战中融会贯通、灵活使用,必将使代码更为精炼、高效,同时也会极大提升代码B格,使之看上去更老练,读起来更优雅。
数据库优化 - SQL优化
以实际SQL入手,带你一步一步走上SQL优化之路!
2019年11月中国大陆编程语言排行榜
2019年11月2日,我统计了某招聘网站,获得有效程序员招聘数据9万条。针对招聘信息,提取编程语言关键字,并统计如下: 编程语言比例 rank pl_ percentage 1 java 33.62% 2 cpp 16.42% 3 c_sharp 12.82% 4 javascript 12.31% 5 python 7.93% 6 go 7.25% 7 p...
通俗易懂地给女朋友讲:线程池的内部原理
餐盘在灯光的照耀下格外晶莹洁白,女朋友拿起红酒杯轻轻地抿了一小口,对我说:“经常听你说线程池,到底线程池到底是个什么原理?”
经典算法(5)杨辉三角
写在前面: 我是 扬帆向海,这个昵称来源于我的名字以及女朋友的名字。我热爱技术、热爱开源、热爱编程。技术是开源的、知识是共享的。 这博客是对自己学习的一点点总结及记录,如果您对 Java、算法 感兴趣,可以关注我的动态,我们一起学习。 用知识改变命运,让我们的家人过上更好的生活。 目录一、杨辉三角的介绍二、杨辉三角的算法思想三、代码实现1.第一种写法2.第二种写法 一、杨辉三角的介绍 百度
腾讯算法面试题:64匹马8个跑道需要多少轮才能选出最快的四匹?
昨天,有网友私信我,说去阿里面试,彻底的被打击到了。问了为什么网上大量使用ThreadLocal的源码都会加上private static?他被难住了,因为他从来都没有考虑过这个问题。无独有偶,今天笔者又发现有网友吐槽了一道腾讯的面试题,我们一起来看看。 腾讯算法面试题:64匹马8个跑道需要多少轮才能选出最快的四匹? 在互联网职场论坛,一名程序员发帖求助到。二面腾讯,其中一个算法题:64匹...
面试官:你连RESTful都不知道我怎么敢要你?
干货,2019 RESTful最贱实践
为啥国人偏爱Mybatis,而老外喜欢Hibernate/JPA呢?
关于SQL和ORM的争论,永远都不会终止,我也一直在思考这个问题。昨天又跟群里的小伙伴进行了一番讨论,感触还是有一些,于是就有了今天这篇文。 声明:本文不会下关于Mybatis和JPA两个持久层框架哪个更好这样的结论。只是摆事实,讲道理,所以,请各位看官勿喷。 一、事件起因 关于Mybatis和JPA孰优孰劣的问题,争论已经很多年了。一直也没有结论,毕竟每个人的喜好和习惯是大不相同的。我也看...
项目中的if else太多了,该怎么重构?
介绍 最近跟着公司的大佬开发了一款IM系统,类似QQ和微信哈,就是聊天软件。我们有一部分业务逻辑是这样的 if (msgType = "文本") { // dosomething } else if(msgType = "图片") { // doshomething } else if(msgType = "视频") { // doshomething } else { // doshom...
致 Python 初学者
欢迎来到“Python进阶”专栏!来到这里的每一位同学,应该大致上学习了很多 Python 的基础知识,正在努力成长的过程中。在此期间,一定遇到了很多的困惑,对未来的学习方向感到迷茫。我非常理解你们所面临的处境。我从2007年开始接触 python 这门编程语言,从2009年开始单一使用 python 应对所有的开发工作,直至今天。回顾自己的学习过程,也曾经遇到过无数的困难,也曾经迷茫过、困惑过。开办这个专栏,正是为了帮助像我当年一样困惑的 Python 初学者走出困境、快速成长。希望我的经验能真正帮到你
Python 编程实用技巧
Python是一门很灵活的语言,也有很多实用的方法,有时候实现一个功能可以用多种方法实现,我这里总结了一些常用的方法,并会持续更新。
“狗屁不通文章生成器”登顶GitHub热榜,分分钟写出万字形式主义大作
一、垃圾文字生成器介绍 最近在浏览GitHub的时候,发现了这样一个骨骼清奇的雷人项目,而且热度还特别高。 项目中文名:狗屁不通文章生成器 项目英文名:BullshitGenerator 根据作者的介绍,他是偶尔需要一些中文文字用于GUI开发时测试文本渲染,因此开发了这个废话生成器。但由于生成的废话实在是太过富于哲理,所以最近已经被小伙伴们给玩坏了。 他的文风可能是这样的: 你发现,
程序员:我终于知道post和get的区别
IT界知名的程序员曾说:对于那些月薪三万以下,自称IT工程师的码农们,其实我们从来没有把他们归为我们IT工程师的队伍。他们虽然总是以IT工程师自居,但只是他们一厢情愿罢了。 此话一出,不知激起了多少(码农)程序员的愤怒,却又无可奈何,于是码农问程序员。 码农:你知道get和post请求到底有什么区别? 程序员:你看这篇就知道了。 码农:你月薪三万了? 程序员:嗯。 码农:你是怎么做到的? 程序员:
"狗屁不通文章生成器"登顶GitHub热榜,分分钟写出万字形式主义大作
前言 GitHub 被誉为全球最大的同性交友网站,……,陪伴我们已经走过 10+ 年时间,它托管了大量的软件代码,同时也承载了程序员无尽的欢乐。 上周给大家分享了一篇10个让你笑的合不拢嘴的Github项目,而且还拿了7万+个Star哦,有兴趣的朋友,可以看看, 印象最深刻的是 “ 呼吸不止,码字不停 ”: 老实交代,你是不是经常准备写个技术博客,打开word后瞬间灵感便秘,码不出字? 有什么
推荐几款比较实用的工具,网站
1.盘百度PanDownload 这个云盘工具是免费的,可以进行资源搜索,提速(偶尔会抽风????) 不要去某站买付费的???? PanDownload下载地址 2.BeJSON 这是一款拥有各种在线工具的网站,推荐它的主要原因是网站简洁,功能齐全,广告相比其他广告好太多了 bejson网站 3.二维码美化 这个网站的二维码美化很好看,网站界面也很...
《程序人生》系列-这个程序员只用了20行代码就拿了冠军
你知道的越多,你不知道的越多 点赞再看,养成习惯GitHub上已经开源https://github.com/JavaFamily,有一线大厂面试点脑图,欢迎Star和完善 前言 这一期不算《吊打面试官》系列的,所有没前言我直接开始。 絮叨 本来应该是没有这期的,看过我上期的小伙伴应该是知道的嘛,双十一比较忙嘛,要值班又要去帮忙拍摄年会的视频素材,还得搞个程序员一天的Vlog,还要写BU
相关热词 c#处理浮点数 c# 生成字母数字随机数 c# 动态曲线 控件 c# oracle 开发 c#选择字体大小的控件 c# usb 批量传输 c#10进制转8进制 c#转base64 c# 科学计算 c#下拉列表获取串口
立即提问